Well, if we take a minute to look at the comments, they were almost all made about a week ago, and all positive. Near the end there are a few people questioning.
Logic would dictate that if 50+ people had really successfully jailbroken their ipod touch 2g, one of them would have posted again themselves on how to do it. Either that or post a 'show-off' video of their jailbroken touch.
For this to be true, the guy would have to have some NDA or something. Since he is offering the files for download, that is unlikely.
Also, if it were that easy to do, one of the dev teams would have downloaded the files, dissected them, and found the exploit. In which case, they would have released their own "legit" version.
All the videos out so far are red herrings to rickroll you, get you to install infected files on your computer, or to pi$$ you off.
That's my take anyways.